All other things being equal, an expansion of housing stock which tracked population growth would keep prices steady. The big shift is immigration expanding th

All other things being equal, an expansion of housing stock which tracked population growth would keep prices steady. The big shift is immigration expanding the pool of working-age people, and longer lifespans increasing the time it takes for family homes to be released back onto the market. People having fewer kids now self-evidently does not affect housing demand (except perhaps to reduce square footage needed per working person)